Global Patent Index - EP 0580241 A3

EP 0580241 A3 19940727 - APPARATUS AND METHOD FOR DETERMINING THE TYPE OF A BATTERY OR ACCUMULATOR

Title (en)

APPARATUS AND METHOD FOR DETERMINING THE TYPE OF A BATTERY OR ACCUMULATOR

Publication

EP 0580241 A3 19940727 (EN)

Application

EP 93202123 A 19930720

Priority

  • EP 93202123 A 19930720
  • EP 92202257 A 19920722

Abstract (en)

[origin: EP0580241A2] In an apparatus for determining the contents of a battery or accumulator (10), the inductive coupling provided by the battery or accumulator (10) between an excitation coil (20) and a sense coil (30) is measured. To improve the selectivity of the apparatus magnets (41, 42) are provided that generate a quasi-static magnetic field during a measurement. The quasi-static magnetic field saturates the iron in an ornamental jacket of the battery or accumulator (10) so that the inductive coupling between excitation coil (20) and sense coil (30) is almost completely determined by the interior of the battery or accumulator (10). The inductive coupling at different frequencies, with and without the quasi-static magnetic field, yields a reliable identification. The excitation coil (20) can be energised by a current source (21, 22, 23) generating an alternating current with constant amplitude. Thereby, the signal in the sense coil (30) is insensitive to the change in self-induction of the excitation coil (20) due to the presence or absence of a battery (10). <IMAGE>

IPC 1-7

H01M 10/48; H01M 10/54; G01N 27/72; H01M 6/52; B07C 5/344

IPC 8 full level

B07C 5/344 (2006.01); H01M 10/48 (2006.01); H01M 10/54 (2006.01)

CPC (source: EP US)

B07C 5/344 (2013.01 - EP); H01M 10/48 (2013.01 - EP US); H01M 10/54 (2013.01 - EP); Y02E 60/10 (2013.01 - EP); Y02W 30/84 (2015.05 - EP)

Citation (search report)

Designated contracting state (EPC)

CH DE FR GB IT LI NL

DOCDB simple family (publication)

EP 0580241 A2 19940126; EP 0580241 A3 19940727; EP 0580241 B1 19961002

DOCDB simple family (application)

EP 93202123 A 19930720